从句归纳-区分定语从句、宾语从句、同位语从句
各种从句总结
各种从句总结：1.主语从句引导主语从句的连词有：that，where；疑问代词有：who，that，which；疑问副词有：when，where，why，how；（1）that引导的主语从句That在主语从句中无任何意义，不充当任何成分，通常不能省略。
例句：That he will succeed is certain.他会成功是肯定的。
常用it作形式主语，而将that从句置于句尾。
例句：It is certain that he will succeed.他会成功，这是肯定的。
若以that从句为主语的句子是疑问句，只能用it作形式主语。
例句：Is it certain that he will succeed?确定他会成功吗？It作形式主语位于句首时有以下四种结构：①It+be+形容词+that从句，例句：It is strange that no one wants to go there.真奇怪，竟然没有人想去那里。
②It+be+名词词组+that从句，例句：It is a pity that he can’t attend the party.真遗憾，他不能参加晚会。
③It+be+-ed分词+that从句，例句：It is said that he was a famous writer.据说他曾是一名著名的作家。
④It+seems/appears等不及物动词+that从句，例句：It seems that it is going to rain soon.看起来天马上要下雨了。
（2）whether引导的主语从句例句：Whether she will go there is not known.还不知道她是否要去那里。
（3）wh-疑问词引导的主语从句例句：What we need is your help.我们需要的正是你的帮助。
Why he did this is not known.他为什么要这样做还不知道。
三大从句语法讲解
三大从句语法讲解从句：在复合句具有主谓部分但不能独立成句的句子。
主句：除掉从句，就是主句在英语中，主要有三大从句：名词性从句（包括主语从句，宾语从句，表语从句，同位语从句）形容词性从句（即定语从句）副词性从句（即状语从句：包括时间、条件、结果、目的、原因、让步、地点、方式等）三大从句快速判断方法：1.主句不完整，从句不完整→名词性从句（连接代词）2.主句不完整，从句完整→名词性从句（连词、连接副词）3.主句完整，从句不完整→定语从句（关系代词）4.主句完整，从句完整→定语从句（关系副词）、同位语从句、状语从句名词性从句主语从句：（用句子代替名词来做主语）比如汉语中：①你通过我的方法学好了英语【主语】是我的荣幸。
②你要不要学英语【主语】是你自己的事。
③你想要的学习效果【主语】还必须靠你自己实现。
④你什么时候开始学英语【主语】是很重要的一件事。
基本：三类主语从句的连词（1）从属连词引导的主语从句（that / whether / if）that引导的主语从句:引导词that无含义/在句中不做成分/不可以省。
That 引导主语从句通常用it 作形式主语。
例如：That you will win the medal seems unlikely.（你要赢得这样比赛看起来不可能。
）That she survived the accident is a miracle.（她能在这场事故中幸存真是个奇迹。
）这个就同我们汉语例子中的①句一样，只不过英语中更加重视句子结构，所以把that放在前头，告诉你这个that后面跟的句子（和里面的主谓宾）不影响主句。
whether 引导的主语从句: whether有含义(是否)/在句中不做成分/不可以省。
注意：引导主语从句，不能用if不能在开头，只能用whether.Whether we will hold a party in the open air tomorrow depends on the weather.（我们明天会不会在户外举办聚会取决于天气。
同位语、表语、宾语、定语,状语从句分类概要
❖ Since /As the weather is so bad, we have to delay our journey. 天气那么 糟，旅行就推迟了。 （原因状语从句，常用 because, since, as, for fear ( 恐怕 ), seeing that ( 既然 ) ， now that (=since), considering that ( 考虑 到 ) 等引导。）
3.由连接副词when, where, how, why引导的主语从句
When he will be back depends on the weather. Where we shall hold the meeting will be discussed at today’s meeting. Why he didn't come here is not clear to anyone.
❖ You must speak louder so that /in order that you can be heard by all. 你必须大声说话，才能让所有人听到你说话。 （目的状语，可以由that, so that, in order that, lest, for fear that, in case等词引导。）
回答问题的学生）
副词性从句（即状语从句,包括时间、 条件、结果、目的、原因、让步、
地点、方式等）
❖ 状语从句相当于一个副词，如：
When it rains, I usually go to school by bus. 天下雨时，我通常坐公共汽车上学。（时间 状语）
❖ If he comes tomorrow, you will see him. 如果他明天来，你就 可以看见他。（if 引导的条件状语从句，其结构为：if +状语从 句，＋主句）。要注意在状语从句中有一个规则是“主将从 现”，即主句是将来时，则从句要用一般现在时表示将来。
英语中总共有六大从句-区分方法
英语中总共有六大从句,区分方法,用法,及例子如下：1.主语从句1）主语从句可直接位于主语的位置,如果从句较长,谓语又较短,可用it作形式主语,而将从句放在句末.常见的句型有：*It is a fact\a pity\a question\good news that...*It seems\appears\happened\has turned out that...*It is clear\important\likely\possible that...*It is said\reported\estimated\has been proved that...It is said that comic books create a connection between people of the same generation.It seems that the performance is very useful.2)what引导的主语从句表示“...的东西时”,一般不用it作形式主语.What we lack is experience.3)what,who,when,why,whether等词含有各自的疑问意义,但它们引导的主语从句,都用陈述语序.How the plan is to be carried out should be discussed again.I did know why I felt like crying.2.宾语从句1）宾语从句可位于及物动词、介词和某些形容词后.连词that常可省略.介词后一般接疑问词引导的宾语从句.in that(因为),except that(除了),but that(只是）已构成固定搭配,其他介词后一般不接that引导的宾语从句.*I promised that I would change the situation.*All this is different from what American young people would say about friendship.*He is certain that watching so much television is not good for children.*This article is well-written except that it is a bit too long.2)宾语从句后如有宾补,要用形式宾语it来代替,而把宾语从句移至宾补之后.He has made it clear that he would not change his mind.3)在think,believe,suppose,expect等动词后的宾语从句中,如果谓语是否定的,一般将否定词移至主句谓语上,宾语从句则变成肯定形式.He didn't think that the money was well spent.3.表语从句表语从句出现在结构为“主语+系动词+表语从句”的句子中.表语从句除可用that,what,when,why,whether,how等引导外,还可由because,as if(though)等引导.that 常可省略.如主句主语为reason,只能用that引导表语从句,不可用because.Perhaps the most important thing to remember is that there is no one common type of life in America.The reason why so many people died there is that there were not enough food supplies.It looks as if successful international cultural communication will make the world smaller.4.同位语从句同位语从句用于对前面出现的名词作进一步说明,一般用连词that引导,由于先行名词的意义不同,也可用whether,who,when,where,what,why,how等引导.常见的先行名词有fact,idea,belief,news,hope,conclusion,evidence,suggestion,order,problem,report,de cision.有时由于谓语较短,将同位语从句位于谓语之后.She finally made the decision that she would join the fashion show.I had no idea how many books I could borrow at a time.The news came that their team had won the championship.5.定语从句定语从句所修饰的先行词可以是名词或代词,也可以是一个句子.定语从句通常位于先行词之后,由关系代词或关系副词引导.*限制性定语从句限制性定语从句修饰先行词,对先行词起修饰作用,紧接先行词之后,无逗号,若省去,原句意思不完整.引导定语从句的关系代词有who,whom,whose,which,that等.who,whom,whose 用于指人,whose有时也可指物,相当于of which；which用于指物；that既可指人也可指物,但只用于限制性定语从句中.关系代词除了引导定语从句,替代先行词外,还在从句中担任主语、宾语、定语等.The computers and cables which make up the Internet are owned by people and organizations.Those who live alone or who are sick may have trouble in getting close to other people.The girl whose parents died in an accident is living with her grandmother.1)当先行词是all,anything,everything,something,nothing等不定代词或先行词前有first,last,any,few,much,some,no,only以及形容词最高级修饰时,只能用关系代词that引导从句.That is all that I've heard from him.He's the first person that I'm going to interview this afternoon.2)关系代词的省略在从句中作宾语的关系代词常可省略.关系代词紧跟介词,作介词宾语时不可用that,只可用which或whom引导从句,并且不可省略,但当介词位于宾语从句句末时,作为介词宾语的关系代词仍可用that,也可省略.This is one of those things with which we have to put up.This is one of those things (which\that) we have to put up with.3)引导定语从句的关系副词有when,where,why等.关系副词在从句中作状语,意义上相当于一个“介词+which”的结构.Even in comic books where(=in which) there are no words,the stories are fully expressed through the drawings.No one knows the reason why(=for which) he was so angry that day.5.定语从句*非限制性定语从句非限制性定语从句既可修饰先行词,也可修饰整个主句,起补充说明作用,与主句之间有逗号隔开,若省去,原句意思不受影响.不可用that引导非限制性定语从句.关系词不可省略. Every object has a gravitational pull,which is rather like magnetism.*“介词+which\whom\whose”引导的定语从句“介词+which\whom\whose”可引导限制性定语从句,也可引导非限制性定语从句,该结构中介词的选择取决于从句谓语动词的固定搭配,或先行词的习惯搭配.This is the computer on which he spent all his savingsIt is written by a person with whom we are all familiar.*as引导的定语从句as引导的定语从句主要用于“such...as”及“the same...as”的结构中,代替先行词是人或物的名词.as引导非限制性定语从句时,代替整个主句,从句可位于主句之前、之后或中间. These are not such problems as can be easily solved.(as代替先行词problems)As is mentioned above,no single company or group can control what happens on the Internet.(as代替主语)6.状语从句*时间状语从句引导时间状语从句的从属连词和词组有：1）when,whenever,while,as,after,before,since,till,until,once等.We have learnt quite a lot about it since we came here.2)as soon as,hardly(scarcely)...when,no sooner...than,each(every) time,the moment,immediately(that)等.As soon as I sent an e-mail message,I received positive responses.The moment he heard the good news,he jumped with joy.*地点状语从句引导地点状语从句的连词是where,wherever.Wherever she went,she took her little daughter with her.*原因、结果和目的状语从句1）引导原因状语从句的从属连词有：because,as,since,now(that),seeing that,considering that,in that等.Considering that he is a freshman,we must say he is doing well.2)引导结果状语从句的连词有：so...that,such...that,so that,that,so等.Mickey Mouse is so attractive that the children are reluctant to leave.3)引导目的状语从句的连词有：so that,in order that,for fear that,lest等,从句常使用may,might,can,could,would等情态动词.We got up early this morning so that we could catch the first bus to the railway station.*条件和让步状语从句1）引导条件状语从句的连词和词组有if,unless,as(so) long as,on condition that,in case,provided(providing) that,supposing等.As long as you have the right equipment,you can use a telephone line to transmit computer data.2)引导让步状语从句的连词和词组有though,although,whether,even though,even if,no matter what(when,how...),whatever(whenever,wherever,however.)等.though,even if 等引导状语从句可转换成含有as的部分倒装结构,具有强调意义.其结构为“形容词（副词、动词、名词）+as+主语+谓语”.No matter what you may say,I would not change my mind.Young as he is,he is quite experienced in this work.(=though he is young)Child as he is,he can speak English fluently.(=though he is a child)*方式状语从句引导方式状语从句的连词有as,just as,as if,as though等.as if,as though引导的状语从句中,谓语动词常用虚拟语气,表示与事实相反.The young man made the experiment just as the teacher had taught him.Everything went on as usual as if nothing had happened.。
英语六大从句用法总结
英语中六大从句用法总结从句是指用于复合句中担当某个句子成分的主谓结构。
虽说从句自身的句子结构是完整的，但是它不能视为独立的句子，因为它离开了主语就无法独立、完整地表达意思。
按其所能表达的意义而言,它相当于一个词或是一个词组.按从句的句子功能划分（也就是按从句在句子中所担任的成分来划分），从句可分为：主语从句、宾语从句、表语从句、同位语从句、定语从句和状语从句。
1.主语从句1）主语从句可直接位于主语的位置，如果从句较长，谓语又较短，可用it作形式主语，而将从句放在句末。
常见的句型有：*It is a fact\a pity\a question\good news that...*It seems\appears\happened\has turned out that...*It is clear\important\likely\possible that...*It is said\reported\estimated\has been proved that...It is said that comic books create a connection between people of the same generation.It seems that the performance is very useful.2)what引导的主语从句表示“...的东西时”，一般不用it作形式主语。
What we lack is experience.3)what,who,when,why,whether等词含有各自的疑问意义，但它们引导的主语从句，都用陈述语序。
How the plan is to be carried out should be discussed again.I did know why I felt like crying.2.宾语从句1）宾语从句可位于及物动词、介词和某些形容词后。
英语八大从句类型总结
英语八大从句类型总结总结就是对一个时期的学习、工作或其完成情况进行一次全面系统的回顾和分析的书面材料，它可以促使我们思考，为此我们要做好回顾，写好总结。
总结你想好怎么写了吗？下面是小编收集整理的英语八大从句类型总结，欢迎阅读与收藏。
英语八大从句类型总结11.时间状语从句（1）When---当……时候,通常指某一特定的时间点，主句与从句的动作同时发生。
（2）When---正在……的时候，突然…。
通常主句是进行时或be about to时，在翻译的时候，when可以译成没想到或突然。
（3）When当从句是进行时，主句是一般时，往往表示不满。
（4）When=after（5）While---在……期间，往往指一段时间。
（6）While---表示一种不满情绪，意思是这边在干某种重要的事，而另一边在享受等。
（7）As---一边……一边,随着（8）The moment---一……就……=as soon as,immediately,2.条件状语从句引导状语从句的连接词有：If如果,unless除非,as long as只要,As(so)far as---据……所知，incase万一,provided that假如,on condition that若是，以…为条件。
3.地点状语从句地点状语从句只有两个连词:Where,wherever。
4.原因状语从句because,as,since,now that,和considering that,seeing that这六个连词都用于表示表示原因,但在语气上一个比一个弱。
5.结果状语从句引导结果状语从句的连词有：that,so that,so…that…6.目的状语从句引导目的状语从句的主要连词有:that,so that,in order that,for fear that,lest.7. 让步状语从句引导让步状语从句的连词有：Although,though,as,even if,even though,no matter,however,whatever,while,whether。
高中英语从句类型
从句的分类六大从句类型主语从句用作主语.That the earth is round is true.宾语从句用作宾语;Do you know where he lives表语从句用作表语.My opinion is that you should not go alone.同位语从句用于解释说明前面的名词,与先行词同位或等同的从句叫作同位语从句;其关联词多为that;The fact that the earth is round is true.that从句用于解释说明the fact定语从句相当于一个形容词,用于修饰前面的名词;定语从句一般皆放在被它所修饰的名代词之后,这种名代词就叫作先行词Antecedent;引导定语从句的关联词为关系代词和关系副词;关系代词在定语从句中可用作主语、宾语、定语等；关系副词在定语从句中用作状语;The student who answered the question was John.状语从句相当于一个副词,修饰主句中的动词, 形容词和副词, 通常有从属连词引导, 按其意义和作用可分为时间, 地点, 条件, 原因, 让步, 目的, 结果, 方式, 比较.等When it rains, I usually go to school by bus.If he comes tomorrow, you will see him.He returned home to learn his daughter had just been engaged.You must speak louder so that /in order that you can be heard by all.Since /As the weather is so bad, we have to delay our journey.从句划分技巧主句和从句的划分方法是相同的;句子的成分从谓语动词处来划分比较容易;谓语动词前面的部分是主语,后面常接宾语,修饰谓语动词的是状语,修饰主语、宾语的是定语,若谓语是系动词,则系动词后的部分是表语;定语从句VS同位语从句定语从句是先行词的修饰语,它不涉及先行词的实质内容,在定规从句中“that”往往充当某一成分且作宾语时可以省略;同位语从句是对中心词的内容作进一步的解释和说明,表明中心词语的具体、实际内容;“that”在同位语从句中不充当任何成分且不可以省略;从句划分练习1. It is quite clear that the crime was down deliberately.2. She suggested that he do it at once.3. That the earth is round is true．4. The problem is not who will go but who will stay.5. The student who answered the question was John．6. Have you any idea how soon they’re coming.7. My original question, why he did it at all ,has not been answered.8. When it rains, I usually go to school by bus．9. What you need is more practice.10. It is still a question when we shall have our sports meet.11. I think it best that you should stay here.12. The question is whether it is worth doing.14. We must find out who did all these.15. Jack is no more frightened than Mike is.16. We expressed the hope that he would come to China again.17. The fact that the earth is round is true．18. There are many organizations whose purpose is to help the homeless.19. Do you know where he lives20. This is the reason why he refused to help us.21. Such people as you describe are rare nowadays.22. He is so humorous that we’ll never forget him.23. My opinion is that you should not go alone．24. I will stand where I can see the parade clearly.25. I’ll take whoever wants to g o with me to the theatre.26. The news that he told me was that Tom would go abroad.27. If he comes tomorrow, you will see him．28. The news that Tom would go abroad was told by him.。
高中英语从句考点汇总,
高中英语从句考点汇总,建议收藏！语法是很多同学薄弱的地方，想要努力提分，却总是感觉有些力不从心？这几天小编将高中英语关于从句的内容全部整理了一遍，这部分内容也是考试中经常出现有容易出错的部分，大家赶紧收藏起来仔细学习，把不懂的语法内容都捋顺！一、主语从句在主句中用作主语的主谓结构称之为主语从句。
例句：That he will come to the discussion is certain. 他来参加讨论是确定的。
That the moon moves round the earth iswell known to all of us.月球绕地球转动，这是我们大家都熟知的。
When the meeting is to be heldhas not yet been decide.会议什么时候召开还没有决定。
主语从句放在句首，句子常常显得比较笨重，因此通常可以把it放在句首，作形式主语，而将主语从句放在后面。
例如上面的句子可以分别改写为：It is certain that he will come tothe discussion.It is well known to all of us thatthe moon moves round the earth.二、宾语从句在主句中作谓语动词、介词及非谓语动词的宾语的主谓结构称之为宾语从句。
在引导宾语从句时，从属连词that在口语中和非正式文本中常省略。
1. 动词后的宾语从句We know that a parrot can’t really speak.我们知道鹦鹉不会真的说话。
He wants to tell us what he thinks.他想告诉我们他所想的事情。
Knowing that it was going to rain, they decided to work inside the house.知道要下雨了，于是他们决定在室内工作。
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从句小结从句总述：从句有主语从句、表语从句、宾语从句、同位语从句、定语从句和状语从句6类。
由于主语从句、表语从句、宾语从句及同位语从句在句子的功用相当于名词，故而这4种从句又通称名词性从句。
1.主语从句（Subject Clause）：用作主语的从句叫主语从句。
引导主语从句的关联词有从属连词、疑问代词、疑问副词、缩合连接代词、缩合连接副词等。
2.表语从句（Predicative Clause）：用作表语的从句叫表语从句。
引导表语从句的关联词与引导主语从句的关联词大都一样。
3.宾语从句（Object Clause）：在句子中起宾语作用的从句叫做宾语从句.宾语从句分为三类:动词的宾语从句,介词的宾语从句和形容词的宾语从句.4. 同位语从句（Appositive Clause）：在复合句中用作同位语的从句叫同位语从句。
它一般跟在某些名词后面，用以说明该名词表示的具体内容。
其关联词多为that。
状语从句还可以分为条件状语从句、原因状语从句、方位状语从句和时间状语从句等。
宾语从句学习宾语从句要抓住三要素：时态、语序、连接词。
一：时态和语序1·主句用一般现在时，从句可用任意时态。
2·主句用过去时，从句用过去某个时态。
3·主句用过去时，从句是真理时，只用一般现在时。
语序：宾语从句只能用陈述句语序，坚决不能用疑问句语序。
二：连接词①从属连词连接宾语从句的从属连词主要有that，if，whether. that引导表示陈述句的宾语从句,而if和whether引导表示“是否”的宾语从句.例句：He told that he would go to the college the next year他告诉我他下一年上大学.I don’t know if there will be a bus any more.我不知道是否还会有公交车.②连接代词连接代词主要有who, whom ,whose ,what ,whoever ,whomever ,whosever, whatever, whichever等.连接代词一般指疑问,但what, whatever除了指疑问外,也可以指陈述.例句：Do you know who has won Red Alert game?你知道谁赢了这一局红警游戏吗?③连接副词连接副词主要有when,where,why,how,whenever,wherever,however等.例句：He didn’t tell me when we should meet again.他没有告诉我什么时候我们能再见面.三：动词的宾语从句We all expect that they will win , for members of their team are stronger.我们都预料他们会赢,因为他们的队员更强壮.I have found out that all the tickets for the concert have been sold out.我发现这场音乐会的所有票都卖光了.make sure确保make up one’s mind下决心keep in mind牢记例句：Make sure that there are no mistakes in your papers before you turn them in.在上交试卷前确保没有任何错误.四：可运用形式宾语it代替的宾语从句①动词find,feel,consider,make,believe等后面有宾语补足语的时候,则需要用it做形式宾语而将that宾语从句后置.例句：I think it necessary that we take plenty of hot water every day .我认为每天多喝开水是有必要的.I feel it a pity that I haven’t been to the get-together.我没去聚会,感觉非常遗憾.②有些动词带宾语从句时寻要在宾语与从句前加it这类动词主要有:hate, take , owe, have, see to.例句：I hate it when they with their mouths full of food.我讨厌他们满嘴食物时说话.五：介词的宾语从句用wh-类的介词宾语从句例句：We are talking about whether we admit students into our club.我们正在讨论是否让学生加入我们的俱乐部.I know nothing about my new neighbor except that he used to work with a company.对于我的新邻居我只知道他曾在一家公司上班,其他一无所知.六：形容词的宾语从句一般来说形容词不能带宾语，更不能带宾语从句。
但以下形容词除外：sure,certain,glad,please,happy,sorry,afraid,satisfied,surprised例句：I am sure I will pass the exam.我确信我会通过考试.I am sorry that I have troubled you so long.很抱歉我这么长时间在打扰你.七：if,whether在宾语从句中的区别①if和whether在作“是否”解时,引导宾语从句常放在动词know,ask,care,wonder,find out等之后,介词后一般不用if②少数动词,如:leave,put,discuss,doubt后的宾语从句常用whether.③whether后可以加or not,但是if不可以.④在不定式前只能用whether.如：I can’t decide whether to stay. 我不能决定是否留下。
⑤避免歧异时,我们常用whether而不用if.八：哪些宾语从句不可以省略引导词that①当一个动词带有两个或两个以上宾语从句时,此时第一个that可以省略,第二个that 不可以省略;②当宾语从句有it做其先行词时;九：宾语从句的否定转移主句的谓语动词是think,believe,imagine,suppose,consider,espect,fancy,guess 等,并且主句的主语是第一人称而且为一般现在时,从句的否定词一般要转移到主句上来,其反义疑问句一般与宾语从句一致.例句：I don’t think he will come to my party.而不能说成I think he won’t come to my party.我认为他不会来我的舞会.I don’t believe that man is killed by Jim,is he?我认为那个人不是Jim所杀的,是不是?★如果宾语从句中有某个含有否定意义的形容词或副词,其反义疑问句要用肯定形式.例句：We find that he never listens to the teacher carefully,does he?我们发现他从来不仔细听老师讲课,是不是?十：宾语从句的时态和语序当主句为现在时或将来时的时候,宾语从句的时态一般不受主句的时态所影响.当主句为过去时的时候，从句只能用和过去相关的时态。
例句：The reporter asked if the government would take necessary measures to put down the to-do.记者问政府是否会采取必要的措施镇压骚乱.★如果从句是一个客观真理,那么从句的时候不根据主句的时态而变化例句：The teacher said that the moon goes around the earth yesterday.老师昨天说月亮绕着地球转.★宾语从句的插入语形式例句：Who do you think the public might choose as their favorite singer this year?你认为今年公众会选谁为他们最喜欢的歌手.同位语从句（Appositive Clause）：在复合句中用作同位语的从句叫同位语从句。
它一般跟在某些名词后面，用以说明该名词表示的具体内容。
其关联词多为that。
一、如：I heard the news that our team had won．我听到了我们队获胜的消息。
I had no idea that you were here．我不知道你在这里。
二、可以跟同位语从句的名词通常有news，idea，fact，promise，question，doubt，thought，hope，message，suggestion，words（消息），possibility等，可展开来的抽象名词。
如：I’ve come from Mr wang with a message that he won’t be able to see you this afternoon．我从王先生那里来，他让我告诉你他今天下午不能来看你了。
三、英语中引导同位语从句的词通有连词that，whether，连接副词how,when,where等。
根据句意决定该用哪一个。
l have no idea When he will be back．我不知道他什么时候回来。
定语从句（Attributive Clause）：用作定语的从句叫定语从句。
定语从句一般皆放在被它所修饰的名（代）词之后，这种名（代）词就叫作先行词（Antecedent）。
引导定语从句的关联词为关系代词和关系副词。
关系代词在定语从句中可用作主语、宾语、定语等；关系副词在定语从句中用作状语。
①引导定语从句的关联词有who, whom, whose, that, when, where, why 和which. 在非限制定语从句中, 只可用which, who, whose, where , when., 如果指代前面整个句子, 多用which.例句：The dog that/which was lost has been found.（失踪的狗已经找到了。
）Those who are in favor of the proposal are expected to discuss it in detail after the meeting.（有人认为那些对这个提案有兴趣的人最好是在会后再具体讨论它。
）There are many organizations whose purpose is to help the homeless.（存在着许多旨在帮助无家可归者的组织。